.page-faq {
  --faq-rule: rgba(16, 32, 43, 0.16);
  --faq-cyan-soft: rgba(55, 228, 211, 0.5);
  --faq-ink-soft: rgba(16, 32, 43, 0.84);
  background: var(--abyss);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-faq a:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 54px;
  background:
    radial-gradient(115% 88% at 84% 0%, rgba(30, 143, 181, 0.38), transparent 62%),
    linear-gradient(180deg, var(--deep) 0%, var(--abyss) 66%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(55, 228, 211, 0.09) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: -1px;
  height: 58px;
  background: var(--paper);
  clip-path: polygon(0 66%, 100% 6%, 100% 100%, 0 100%);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6.4vw, 86px);
  line-height: 0.98;
  letter-spacing: 0.005em;
  color: var(--paper);
}

.page-faq .faq-hero__title br {
  display: none;
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 234, 217, 0.84);
}

.page-faq .faq-hero__quick {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 34px 0 44px;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--faq-cyan-soft);
}

.page-faq .faq-hero__quick li {
  border-bottom: 1px solid var(--hair);
  min-width: 0;
}

.page-faq .faq-hero__quick a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 14px 10px 14px 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  transition: color 160ms var(--ease), transform 160ms var(--ease);
}

.page-faq .faq-hero__quick a:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .faq-hero__quick .num {
  font-size: 13px;
  color: var(--amber);
}

/* ---------- 分栏主体 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--paper-ink);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 54px 0 74px;
  min-width: 0;
}

/* 目录 */
.page-faq .faq-index {
  align-self: start;
  padding: 20px 18px 22px;
  background: var(--deep);
  color: var(--paper);
  border: 2px solid var(--abyss);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list li + li {
  border-top: 1px solid rgba(242, 234, 217, 0.14);
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 2px;
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-faq .faq-index__list a:hover {
  color: var(--cyan);
  padding-left: 7px;
}

.page-faq .faq-index__list .num {
  font-size: 12px;
  color: var(--lake);
}

.page-faq .faq-index__list a:hover .num {
  color: var(--cyan);
}

.page-faq .faq-index__meta {
  margin: 18px 0 16px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--slate);
}

/* 内容流 */
.page-faq .faq-stream {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.page-faq .media-frame {
  display: block;
  margin: 0;
  overflow: hidden;
}

.page-faq .faq-stream__figure {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-sec__figure {
  aspect-ratio: 5 / 3;
  margin-bottom: 20px;
}

.page-faq .faq-stream__figure img,
.page-faq .faq-sec__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  padding-top: 18px;
  border-top: 3px solid var(--paper-ink);
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  color: var(--lake);
  transition: color 200ms var(--ease);
}

.page-faq .faq-sec.is-active .faq-sec__num {
  color: var(--amber);
}

.page-faq .faq-sec .section-title {
  margin: 0;
  color: var(--paper-ink);
}

/* 问答 */
.page-faq .qa {
  padding: 2px 0 16px;
}

.page-faq .qa + .qa {
  border-top: 1px solid var(--faq-rule);
  padding-top: 20px;
}

.page-faq .qa__q {
  position: relative;
  margin: 0 0 10px;
  padding-left: 20px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.36;
  color: var(--paper-ink);
}

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  transform: translateY(-50%);
}

.page-faq .qa__a {
  max-width: 68ch;
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__steps {
  counter-reset: qa-step;
  display: grid;
  gap: 1px;
  max-width: 520px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .qa__steps li {
  counter-increment: qa-step;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px;
  background: rgba(16, 32, 43, 0.06);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .qa__steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lake);
}

.page-faq .qa__tablewrap {
  margin: 16px 0 4px;
  max-width: 100%;
  overflow-x: auto;
  border-left: 4px solid var(--lake);
  padding-left: 10px;
}

.page-faq .qa__tablewrap .num {
  white-space: nowrap;
}

/* 字段名复制 */
.page-faq .field-list {
  display: grid;
  gap: 8px;
  max-width: 520px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .field-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 12px;
  background: var(--abyss);
  color: var(--paper);
  border-left: 4px solid var(--cyan);
}

.page-faq .field-list__name {
  font-size: 14px;
  min-width: 0;
  word-break: break-word;
}

.page-faq .field-list .copy-btn {
  flex: 0 0 auto;
  background: transparent;
  color: var(--cyan);
  border: 1px solid rgba(55, 228, 211, 0.55);
}

.page-faq .field-list .copy-btn:hover {
  background: rgba(55, 228, 211, 0.12);
}

/* ---------- 深色章节 ---------- */
.page-faq .faq-sec--dark {
  padding: 24px 20px 20px;
  border: 2px solid var(--abyss);
  border-top: 3px solid var(--abyss);
  background: var(--deep);
  color: var(--paper);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-sec--dark .section-title {
  color: var(--paper);
}

.page-faq .faq-sec--dark .faq-sec__num {
  color: var(--mist);
}

.page-faq .faq-sec--dark .qa__q {
  color: var(--paper);
}

.page-faq .faq-sec--dark .qa__a {
  color: rgba(242, 234, 217, 0.82);
}

.page-faq .faq-sec--dark .qa + .qa {
  border-top-color: rgba(242, 234, 217, 0.16);
}

.page-faq .timeline {
  display: grid;
  gap: 18px;
  margin: 0 0 22px;
  padding: 0 0 0 18px;
  list-style: none;
  border-left: 2px solid var(--cyan);
}

.page-faq .timeline__item {
  position: relative;
}

.page-faq .timeline__item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--amber);
  border-radius: 50%;
}

.page-faq .timeline__time {
  display: block;
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .timeline__text {
  margin: 6px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 234, 217, 0.82);
}

/* ---------- 联系方式块 ---------- */
.page-faq .faq-contact {
  margin-top: 20px;
  padding: 18px 18px 16px;
  background: var(--abyss);
  border-left: 4px solid var(--amber);
}

.page-faq .faq-contact .contact-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact .contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-contact .contact-list__label {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-faq .faq-contact .contact-list__value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact .copy-btn {
  background: transparent;
  color: var(--amber);
  border: 1px solid rgba(243, 167, 59, 0.5);
}

.page-faq .faq-contact .copy-btn:hover {
  background: rgba(243, 167, 59, 0.14);
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  position: relative;
  overflow: hidden;
  padding: 52px 0 68px;
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(30, 143, 181, 0.3), transparent 60%),
    var(--abyss);
}

.page-faq .faq-next .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-next__inner {
  display: grid;
  gap: 16px;
}

.page-faq .faq-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.05;
  color: var(--paper);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 96px 0 60px;
  }

  .page-faq .faq-hero__title br {
    display: block;
  }

  .page-faq .faq-hero__quick {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-hero__quick a {
    padding-right: 16px;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 46px;
    padding: 64px 0 88px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 26px;
  }

  .page-faq .faq-stream {
    border-left: 2px solid var(--faq-cyan-soft);
    padding-left: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__quick a,
  .page-faq .faq-index__list a,
  .page-faq .faq-sec__num {
    transition: none;
  }

  .page-faq .faq-hero__quick a:hover {
    transform: none;
  }
}